Dichotomius (Luederwaldtinia) simplicicornis (Luederwaldt, 1935),

Chamorro, William, Marin-Armijos, Diego, senjo, Angelico & Vaz-De-Mello, Fernando Z., 2019, Scarabaeinae dung beetles from Ecuador: a catalog, nomenclatural acts, and distribution records, ZooKeys 826, pp. 1-343: 127-129

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Dichotomius (Luederwaldtinia) simplicicornis (Luederwaldt, 1935)


Dichotomius (Luederwaldtinia) simplicicornis (Luederwaldt, 1935)  Plate 29A

Pinotus (Selenocopris) simplicicornis  Luederwaldt, 1935: 340 (original description. Type locality: Peru).

Pinotus simplicicornis  : Blackwelder 1944: 208 (list of species from Latin America); Krajcik 2012: 92 (complete list of species).

Dichotomius simplicicornis  : Ratcliffe et al. 2015: 197 (cited for Peru).

Dichotomius (Luederwaldtinia) simplicicornis  : Chamorro et al. 2018: 95 (cited for Ecuador).

Types specimens.

Pinotus (Selenocopris) simplicicornis  Luederwaldt, 1935. The holotype (♂) is deposited at the NHML. Locality: Peru. Examined.

Holotype (♂): "Peru [hw]", "34600 [hw]", "Pinotus ♂ / simplicicornis n. sp / Lüeder. det. 34 [hw, black margin]", "Fry Coll. / 1905-100. [p]", "HOLOTYPE [p, red label, black margin]".


Ecuador and Peru.

Records examined.

LOJA: Catamayo, Alamala, 1100 m (2 specimens CEMT). MORONA SANTIAGO: Nuevo Israel, Cordillera del Kutukú (1 specimen CEMT). NAPO: Pte. Río Salado-Río Quijos, Parque Nacional Sumaco (1 specimen CEMT); Quebrada Granadillas, Parque Nacional Sumaco, 1300 m (1 specimen CEMT). ZAMORA CHINCHIPE: Bombuscaro, Parque Nacional Podocarpus, 970 m (4 specimens MECN); Río Bombuscaro, Parque Nacional Podocarpus, 1145 m (7 specimens MEPN); Tundayme, Escombrera, 1225 m (1 specimen MUTPL); Zurmi Comunidad La Wants, 1000 m (2 specimens CEMT).

Temporal data.

Collected in January, March, May, August, September, and December.


Inhabits the foothill evergreen forests in the Amazonian range from 970-1225 m a.s.l. Collected manually and with pitfall traps baited with carrion and human feces. According to Kohlmann and Solís (1997) and Solís and Kohlmann (2012), the previous records from Costa Rica are erroneous.